A Timing Asynchronous Full Duplex Digital Self-interference Suppression Method by Segment Convolution

LI Tong; SHEN Ying; PAN Wensheng; SHAO Shihai; TANG Youxi

doi:10.11999/JEIT210024

Volume 44 Issue 4

Apr. 2022

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Article Navigation > Journal of Electronics & Information Technology > 2022 > 44(4): 1395-1401

LI Tong, SHEN Ying, PAN Wensheng, SHAO Shihai, TANG Youxi. A Timing Asynchronous Full Duplex Digital Self-interference Suppression Method by Segment Convolution[J]. Journal of Electronics & Information Technology, 2022, 44(4): 1395-1401. doi: 10.11999/JEIT210024

Citation:

LI Tong, SHEN Ying, PAN Wensheng, SHAO Shihai, TANG Youxi. A Timing Asynchronous Full Duplex Digital Self-interference Suppression Method by Segment Convolution[J]. Journal of Electronics & Information Technology, 2022, 44(4): 1395-1401. doi: 10.11999/JEIT210024

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A Timing Asynchronous Full Duplex Digital Self-interference Suppression Method by Segment Convolution

doi: 10.11999/JEIT210024

National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China, Chengdu 611731, China

Funds: The National Natural Science Foundation of China (U19B2014, 61771107, 62071094, 61701075, 61601064, 61531009), The National Key R&D Program of China (2018YFB1801903), The Science and Technology Program of Sichuan Province (2020YFH0101)

Received Date: 2021-01-08
Rev Recd Date: 2021-06-09

Available Online: 2021-08-24

Publish Date: 2022-04-18

Abstract

Abstract

At the Co-frequency and Co-time Full Duplex (CCFD) multi-carrier signal time asynchronous scenario,, the maximum multipath time offset between the Signal of Interest (SoI) and the Self-Interference (SI) exceeds the length of the Cyclic Prefix (CP), which causes the decrease of the performance in the frequency domain self-interference cancellation. In view of this problem, a timing asynchronous self-interference suppression method by segment convolution is proposed; The relationship between the SI and the SoI is analyzed; The SI suppression process is established. Theoretical and simulation results show that the cancellation performance in the asynchronous state is equivalent to that in the synchronous state.
- Wireless communication,
- Co-frequency and Co-time Full Duplex (CCFD),
- Digital self-interference cancellation,
- Timing asynchronous

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References(18)

References

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